48_Rotate_Image.cc

class Solution {
public:
    void rotate(vector<vector<int>>& matrix) {
        vector<vector<int>> copymat=matrix;
        int n=matrix.size();
        for(int i=0;i<n;++i){
            for(int j=0;j<n;++j){
                matrix[j][n-1-i]=copymat[i][j];
            }
        }
        
    }
};